Malicious PDF — malware analysis report

Static analysis result for SHA-256 3346eb5688adc393…

MALICIOUS

PDF

85.8 KB Created: 2021-07-14 08:16:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 4479149edbcdd4fed3787ad0577b7842 SHA-1: 89866049d4e676baada8ea2eae5bdb96fbbcabc5 SHA-256: 3346eb5688adc3938abfabfbd9183798f21ef488620d1cf835c5cde0f65066b1
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics identified it as a link farm pointing to compromised WordPress uploads and disposable hosting, suggesting a phishing or malware distribution scheme. The embedded URLs lead to potentially compromised sites, which is a common tactic for delivering malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/a7dfc98b9c59cce91380eac5c020afe2/pikole.pdf In PDF document text
    • http://mirembeestate.co.ug/wp-content/plugins/formcraft/file-upload/server/content/files/1607ca9f151512---vonadako.pdfIn PDF document text
    • http://www.dj-csnl.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1608057b649e7f---95753439850.pdfIn PDF document text
    • http://ptairsupply.com/userfiles/file/bibemapebudapisan.pdfIn PDF document text
    • https://alignerco.com/wp-content/plugins/super-forms/uploads/php/files/a58c164d241bff64265e9c3e04097b8f/43345511609.pdfIn PDF document text
    • http://graphicon.hu/wp-content/plugins/formcraft/file-upload/server/content/files/1607f17a23caf6---91164019093.pdfIn PDF document text
    • http://gruppocinofilomarsalese.com/userfiles/files/27114700297.pdfIn PDF document text
    • https://controlcert.se/wp-content/plugins/formcraft/file-upload/server/content/files/1609f851e2ac57---bisakikajobesozinubeg.pdfIn PDF document text
    • http://chanakol.com/ckfinder/userfiles/files/wosuwuxagovexifovixubebi.pdfIn PDF document text
    • http://thedreams.cz/files/33518028267.pdfIn PDF document text
    • https://www.mobytec.com.br/mobytec/wp-content/plugins/formcraft/file-upload/server/content/files/16098c268b79c7---59336117532.pdfIn PDF document text
    • http://location-appartement-venise.com/italie_documents/files/17589279118.pdfIn PDF document text
    • http://vp-dmsh.ru/admin/ckfinder/userfiles/files/66873822102.pdfIn PDF document text
    • http://www.blackhillsdancecentre.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b6a6195a1f0---67963701523.pdfIn PDF document text
    • https://luxmarketing.agency/wp-content/plugins/super-forms/uploads/php/files/rvb0mtevtldj0ko5qu9hkfvja8/14034268501.pdfIn PDF document text
    • http://laconchigliacasevacanze.it/userfiles/files/50372655192.pdfIn PDF document text
    • https://moniimpex.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a58bbeb6ce---supumebuwuvezebeka.pdfIn PDF document text
    • http://castudio.eu/userfiles/files/tovakibiwimutebe.pdfIn PDF document text
    • http://ipvoicenj.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b24a67317a1---71880808196.pdfIn PDF document text
    • https://almondzwealth.com/administrator/imagetemp/file/fozisazako.pdfIn PDF document text
    • https://bayardplaza.co.uk/wp-content/plugins/super-forms/uploads/php/files/jofg5d0cdmvl3h558u6t7t0n46/63668598312.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=how+to+make+pdf+files+in+laptopPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e9aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9AA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000101bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101BC 17716 bytes
SHA-256: 1225a726dd83a9e7055fea058cd752ce3331907e7ed6c3a31b7de79c31f5abfb
font_02_sfnt_off00012fea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12FEA 10728 bytes
SHA-256: 17dcfdfe72e845397352aec460e3ec82d1ffdf195fd167b2af737c51c969eb9c

Open this report in the interactive analyzer, or submit your own file for analysis.